56 CRUSTACEA OF ALABAMA. 



Fig. 7. Palcemonetss vulgaris, a, antenna. 

 Fig. 8. Mancaselius sp ? 

 Fig. 8. Larval asellus ? 



Plate VI. 



Fig. 1. Gammarus dubius. a, last abdominal foot, b, telson. 



Fig. 2. Streptocephalus sealii. Head of male and female, a, antenna of young, b, same in advanced 

 stage, c, part of abdomen of female. 



Fig. 3. Cypris virens, labium and both pairs of maxillae, a, second antennae, b, first foot, c, second foot, 

 d, jaw, e, caudal styiets. 



Fig. 4. Harpacticus chelifer, a, antenna of male, b, fourth foot of female, c, fifth foot of male, d, max- 

 illa, e, second foot of male, f, mandible, g, second maxilliped. 



Fig. 5, Laoponte mississippiensis, abdomen, a, one of the feet. 



Fig. 6, Canthocamptus mobilensis, a, caudal stylet of male, b, antenna of female, c, first foot, d, fifth foot 

 of female, e, fifth foot of male, f, antennule. 



Plate VII. 



Fig. 1. Cyclops simplex, a, abdomen, b, labrum, c, antenna of female, d, fifth foot, e, pair of feet, f, 

 pair of feet, g, pair of feet, h, antennule, i, mandible, i, maxilliped. 



Fig. 2. Cyclops fimbriatus. a, part of abdomen, b, antenna, c, labrum, d, feet of fourth pair. 



Fig. 3. Cyclops diaphanus, a, part of abdomen, b, pair of feet, c, antenna of female, d, labrum, e, sper- 

 matheca. 



(Plate VIII, omitted.) 

 Plate IX. 



Fig. 1. Ilyocryptus spinifer, Her., female. 



Fig. 2. Post-abdomen of same. . 



Fig. 3. Antennule of same. 



Fig. 4A. Jaw of /. sordidus. 



Fig. 4. Post-abdomen of same. 



Fig. 5. Post-abdomen of /. agilis. 



Fig. 6. Head of same, antennae being removed. 



Fig. 7. Antennule of 7". sordidus. 



Fig. 8. Spines on edge of shell of same. 



Fig. 9. Post-abdomen of I. acutifrons. 



Fig. 1 o. Monospilus dispar, female. 



